Improvement in wood pavements



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Letters Patent No. 101,346, dated March 29, `1870.

IMPROVEMENT IN WOOD PAYEMENTS.

-The Schedule referred to in these Letters Patent and making part, of the lame.

To all whom -it may concern Be it known that I, ALBERT BmrnLEv,of-Boston, inthe county of Suffolk and State of Massacllusett-s, have invented an Improved Wood Pavement; and I do hereby declare that the. t``)llowing,'taken in connec.

tion with the drawingswhicli accompany and form part of this specification, is a description of my inventionfsufticient to enable those skilled in the art to practice it.

This invention is an improvement in wood pave- .i

ment, made up of cylinders formed from young or small trees, the advantages of such material having been before set forth by me in my patent No'. 96,870, dated November 16, 1869, to which'referenee 'may be had therefor. y

My present invention consists in a wood pavement made up of cylinders of comparativelysmall diameter, say from about four to seven inches diameter off body, some of which blocks have grooves turned in their peripheriesand others have beads, 1illetsor rings formed on their peripheries, preferably integral with the blocks, so that `the grooved blocks and the beaded or ringed blocks interlock when placed in positionon a road-bedVand mutually support each other from vertical displacement, the blocks being set in a substantially upright posit-ion, and their ends and grooves and rings being substantially square to the axes of the blocks which are irterspaced as to their relative positions, as will be seen in iigs. 1 and 2.

Figure 1 ofthe drawings shows, one-half in plan and one-half in horizontal section, a piece of pavement made in accordance with lny invention.

Figure 2 shows in plan a piece of pavement embodying my invention, in which the arrangement of the grooved and ringed blocks differs sonnnvhat from that shown in iig. 1.

In said figure it will be seen thateach ringed block is' surrounded by six grooved blocks, and that the same is the case in iig. 2. In Iig. 1, however, the arrangement ot' the blocks is such that in each row tall-leu in any right line of direction will be found both ringed. and grooved blocks; and, on inspection of said figure, it will further be seen that the system is such that each grooved block is supported o v the interlocking therewith of three ringed blocks.

In fig. 2 it will be seen that in one direct-ion there is a row of grooved bloc-ks, and a row of blocks in which grooved and ringed blocks alternate, then a row of grooved blocks, and next a. row of grooved and ringed blocks, and so on throughout the'pavenient.

In this arrangement each grooved block is supported by they interlocking therewith of two ringed blocks.`

- 'The ringed blocks are marked a, and the grooved blocks b, in all the figures.

Figure 3 is a vertical section, taken in the line z s, fig. 1, andthe tops of these blocks are shown as slightly rounded, `which may, in some locations, be deemed desi rable-to afford a foothold for horses, though if the blocks "are left flat'at the outset, they will natu-I tally wear rounding on top, as shown in fig. 3.

showing the ringed blocks in section,.and the grooved blocks in elevation beyond. y v

Figure 5 is a. section taken intheline :t x, fig. l showing the grooved blocksin section.

Figure 6 is a section taken in the line w w, tig-2,

showing the, alternate grooved and ringed blocks in one row. i

I `igm 'e` 7 is` a section taken in the line 'c c, fig. 2, Ashowing the grooved blocks of a row only.

It will be seen that the ringed and -grooved blocks interlock and mutually support each other against vertical displacement, and that-the spaces left between the blocks afford a good lioldfor the feet of horses, so that they will not slip upon the pavement.

A Each block is also supported by six vertical lines ol lcontact with its neighbors, besides Abeing supported fwith the. sand, gravel, or other` material which is to be filled into the interspaces.. 1

The bodies of the' blocks forming a pavement are to be made of uniform diameter,. that is, the ringed blocks, above and below the ring on each, are to be of the same diameter as the grooved blocks above and below the groove in each.

More than one groove and more than one ring, or the equivalent of the ring, may be employed, though I consider one at about the center of the length of veach block as sutiicient.

I claim a pavement made up of cylimlrical blocks, interlocked substantially as described.

ALBERT BE'IT ll L E Y'.

Witnesses:

J. B. Caos-Bv, C. WARREN BROWN.

Figure 4 is a section taken on the line y y, g. 1, 

